experimenting with string tension ratio is what all stringer should go through. the problem is that the combination is endless and there are many variables.. my latest experiment shows that the perfect combo is if M=C tension, bottom up, fixed clamp on main and flying clamp on cross. yes, that's a weird one. but for some reason, if i use fixed clamp on cross, the feeling is less lively. no variation of tension on the cross manage to recover the same feeling. go figure.